Brake-controlled car-door securer.



F. J. GILROY. BRAKE GONTR'OLLED GAB. DOOR SBOUREB.

APPIoA'loN FILED uns, 1909.

925,433. Patented June 15, 1909.v

*SMM

Fl i K v f4/fil f i all FRA-nn J. sinner, or BUFFALO, NEW'YORK.

BRAKE-CONTROLLED CAR-D003, SECUBER.

No. eeeeaef Specification of Lettere Patent.'

Application filed January 5, 1909.

Patented .time 1a, '190e Serial No. $50,752.

T o all whom it may concern.'

Be it known that T, FRANK J. GILRor, e citizen of the United States, residing at Bu'alo, in the county of'Erie and State of New York, have invented certain new and useful improvements in Brake-Controlled Car-Door Securers, of which the following,r is a specification, reference being had therein to the accompanying drawing.

My invention relates to securing car doors by'devices which are released only by conipressed air 'from the air-brake system of the train, or more specilically, with 'the brake cylinder of the ear itself, the object being to make it practically impossible for any person to open the car without the aid of some person in charge of a locomotive which is coupled to the ear so that it may actuate its air brakes. @ther objects will hereinafter appear. v

ln the accompanying drawings, Figure l is a cross sectional viewof a portion of a car and its door, my devices being in position thereon. Fig. 2 is a horizontal section above the plane or" the locking; devices proper. Fig. 3 is a view looking from the rightI in Fig. 2, parts to the right of the plane SW3 being,- removed. Fig. Ll is a section. on the like Ll-li, Fig, l.

in these figures, A represents the body oi2 a car provided with the usual air-brake eylinder B and with an ordinary sliding door C. Upon the side of the stud or jamb D of the doorway is secured a lock case E adapted to receive an inclined locking bolt or pin F which passed upwardly inward through the iin-.'giiial portion or" the door or suitable device'sccured thereto, into the lock where it is engaged by devices to be described and thus held from falling out under force of gravity. As shown, the bolt is formed' with a conical point and near the point with an annular `groove, so that it lies in effect a sniall head F3 at. its inner end. fit the outer end it is pro-vided Willi av thin flange or, head F, and to this end is attached a chain l?2 which connects it to the car so that it. may not be dropped or lost. The' door perforated for the passage of the bolt and the perforation is provided with a tuishinp,` (l reccssedat its outer end to receive the head l1", the passage G through l the bushing and the recess in its end being of greater diameter than the corresponding parts of the bolt so that the -door may move slightly in its own plane Without causing uw boa i@ bind. The head beingihus sunk' i in the recess is not readilyengaged by! any implement capable of applying great' force. The end ol the bolt which enters the lock ease is engaged upon `opposite sides'by two hooksV l-l which are centrally recess in the ease and are at al times preferably urged. toward locking position by springs P and are positively locked andf unf locked by the movements ofv a lunger If working in a cylindrical il'ui i' pressure chfiniber l in the lock case, in line with the bo t. from the vhooks by a springllfandiis forced in the opposite direction against the f'orce of the s ring by compressed air brought' rises from the brake cylinder into the can or its walls, passes to the vicinity of the locking,r devices, out through the Wall4 of the car and then back through the Wall to the lock ease.

lfhe plunger is formed with a eonicalre, cess N adapting it to engage the inclined ward when the plunger is forced forward' hy the entrance of compressed air under ,-;iitlieieiit tension to overcome the force of the spring, and thus the hooks are forced to release the bolt allowing the' latter to slide out under the force of gravity, leaving the door unlocked. The spring is made of such strength that the full braking powerinust be applied in the braking cylinder' before the lock is actuated. As soon as the air pressure falls suiciently, the spring forces the plunger to retreat, and when it is fully retracted, the head O of a Small stud carried by thi` plunger is brought between the freeI position. rfhis stud is in some cases omitted, engagement being' then. urged and malnained by the springs P.

vided with a seal which must be broken be mechanism has been tampered with.

it' it has been, the car cannot have been unlocked without the ald of the engineer, who

The plunger is normally held away end of the hooks to hold them in lookingv ln order that the-air from the brake cylfrom the rake cylinder B by a pipe J which y Si) inner ends of thehooks and force them inlos case, and the valve stem is ordinarily pro- 'fore the valve can be opened, and it may. i therefore he seen at a glance Whether the Even Ning applies the needed full braking power only 1uan emergency or for the purpose of un- .locking` the ears.

If it be desired to unlock the ear, the

i engineer applies the full braking" power and i until they are connected again with an engine 'or-with some plant capable of produeing the proper pressure in the braking cylinder. To prevent the gradual .accumulation of pressure by small pump or the like., the various air Chambers are provided with. vent passage R, here shown as in the plunger itself.

What l claim is:

l. The combination with a car, its door, and air brake devices carried by the car, oi a door-engaging' bolt adapted' lo be passed inward until it projects into the interior of the ear, devices Secured to the. ear within Lhe door .and adapted to engage the projecting; end of the bolt'r and prevent its withdrauah and means whereby compressed air from the brakemechanism may release saidengae'ing devices.

2. lhe combination with a car, itis'door, and air-brake mechanism carried by the ear, of a loose locking bolt passed obliquely up- 'ard through the door, and devices eontrolled by air" from the brake meehanisin forengaging the inner end of the bolt.

3. The combination with a car and a door therefor provided with' an upwardly in clincd transverse passage for a locking bolt, of a loose bolt adapted to pass loosely inward in said passage and to fall therefrom by verse bolt passage, and air brake mechanism earried by the ear, of a leek .case secured to lhe rar inside the doors plane7 and ha vingI bolt engaging devices and an air pressure cylinder, a plunger in said cylinder aetuab ine the engaging' devices, and a separate bolt adapted to be passed inward in said passage intoengagement with the bolt en Lap-infr devices.

t). The combination with a ear, itsdoou` and ainbrake mechanism, of a locking,- clutch secured to the ear within the plaine of the door, an air cylinder and plunger therein .arranged for actuating;- theeluteh, ay pipe passing from `the brake cylinder' upward' into the car and to Said cylinder, a valve controllingt'he passage ol air in Said pipe and operable from the exterior of the ear, a

' .spring resisting the movement of the plunger by air from said pi pe, and a door-lock ing bolt adapted to be passed from without the car through the door into engagement with said elutch.

ln testimony whereof I al'x my signature in ]'n'eeenee or' two witnesses.

FRA NK J. GLRUY.'

lli'itnesses:

G. R. riLisY, JOHN J. liiuuuii.. 

